Mathematics, 12.05.2021 14:00 cchsemily7210
the sum of the first ten terms of an arithmetical progression is 255. find the sum of the next twenty terms of the progression given that the sum of the first twenty terms of the progression is 1010.​
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the sum of the first ten terms of an arithmetical progression is 255. find the sum of the next twent...
Mathematics, 27.02.2021 01:00
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